/* ===================================
   1. CSS VARIABLES
   =================================== */
:root {
    /* Colors */
    --color-primary: #262626;
    --color-secondary: #1d1d1f;
    --color-accent: #ad2432;
    --color-accent-hover: #b6505a;
    --color-text-primary: #262626;
    --color-text-secondary: #6e6e73;
    --color-text-tertiary: #ffffff;
    --color-background: #ffffff;
    --color-background-dark: #424242;
    --color-surface: #f5f5f7;
    --color-border: #d2d2d7;
    
    /* Links */
    --color-link: #310207;
    --color-link-hover: #ceaaad;
    
    /* Typography */
    --font-display: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    
    /* Font Sizes */
    --font-size-xxs: 12px;
    --font-size-xs: 13px;
    --font-size-sm: 14px;
    --font-size-md: 16px;
    --font-size-base: 17px;
    --font-size-lg: 19px;
    --font-size-xl: 21px;
    --font-size-2xl: 23px;
    --font-size-3xl: 26px;
    --font-size-4xl: 30px;
    --font-size-5xl: 34px;
    --font-size-6xl: 42px;
    --font-size-7xl: 56px;
    --font-size-8xl: 78px;
    
    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 80px;
    --spacing-2xl: 120px;
    
    /* Border radius */
    --radius-sm: 12px;
    --radius-md: 18px;
    --radius-lg: 24px;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.25, 0.1, 0.25, 1);
    --transition-smooth: 0.35s cubic-bezier(0.25, 0.1, 0.25, 1);
}

/* ===================================
   2. GLOBAL RESET & BASE
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-body);
    color: var(--color-text-primary);
    background-color: var(--color-background);
    line-height: 1.5;
    font-size: var(--font-size-md);
    overflow-x: hidden;
}

a {
    color: var(--color-link);
    text-decoration: none;
    transition: all var(--transition-fast);
}

a:hover {
    color: var(--color-link-hover);
}

/* ===================================
   3. NAVIGATION
   =================================== */
.nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 9999;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    height: 60px;
    display: flex;
    align-items: center;
}

.nav > div {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo a {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--color-text-primary);
}

.nav-menu {
    display: flex;
    gap: 36px;
    list-style: none;
}

.nav-menu a {
    color: var(--color-text-primary);
    font-size: var(--font-size-md);
    display: block;
}

.nav-menu a.active {
    font-weight: 600;
    color: var(--color-accent);
}

/* Submenu */
.has-submenu { 
    position: relative; 
}

.submenu {
    position: absolute;
    list-style: none;
    top: 40px;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 12px 0;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-smooth);
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.has-submenu:hover > .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.submenu a {
    padding: 8px 20px;
    white-space: nowrap;
}

.submenu a:hover {
    background: var(--color-surface);
    color: var(--color-accent);
}

/* Mobile Burger Button */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 4px;
    background: none;
    border: none;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 2px;
    transition: all var(--transition-smooth);
}

.nav-toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ===================================
   4. CATEGORY HEADERS
   =================================== */
.category-header-page {
    padding: 140px 22px 60px;
    max-width: 1200px;
    margin: 0 auto;
}

.breadcrumb {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.breadcrumb a {
    font-size: var(--font-size-xs);
    color: var(--color-accent);
}

.category-title-large {
    font-size: var(--font-size-7xl);
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-sm);
}

.category-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 1024px;
}

/* ===================================
   5. GRIDS - HAUPTKATEGORIESEITEN
   =================================== */
.projects-grid-2x2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    padding: 0 var(--spacing-md) var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
}

.project-card-square {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--transition-smooth);
    display: block;
    text-decoration: none;
}

.project-card-square:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.project-card-square .project-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.project-card-square .project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-smooth);
}

.project-card-square:hover .project-image img {
    transform: scale(1.02);
}

.project-info {
    padding: var(--spacing-md);
}

.project-info h3 {
    font-size: var(--font-size-xl);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.project-link-arrow {
    color: var(--color-accent);
    font-size: var(--font-size-sm);
    font-weight: 500;
    display: inline-block;
    transition: transform var(--transition-fast);
}

.project-card-square:hover .project-link-arrow {
    transform: translateX(2px);
}

/* ===================================
   6. GRIDS - PROJEKTUNTERSEITEN (LOGODESIGN)
   =================================== */
.projects-grid-combined {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-md);
    padding: 0 var(--spacing-md) var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
}

.project-card-large {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--transition-smooth);
    max-height: 1000px;
}

.project-card-large:hover { 
    transform: scale(1.01); 
}

.project-image {
    width: 100%;
    aspect-ratio: 9 / 16;
    overflow: hidden;
    max-height: 1000px;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.project-cards-stack {
    display: grid;
    grid-template-rows: 1fr 1fr 1fr;
    gap: var(--spacing-md);
    height: 100%;
    max-height: 1000px;
}

.project-card-small {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--transition-smooth);
    min-height: 0;
    height: 100%;
}

.project-card-small:hover { 
    transform: scale(1.01); 
}

.project-image-small {
    height: 100%;
    width: 100%;
}

.project-image-small img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
}

/* ===================================
   7. GRIDS - PROJEKTUNTERSEITEN (LAYOUTDESIGN)
   =================================== */
.projects-grid-images-only {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    padding: 0 var(--spacing-md) var(--spacing-xl);
    max-width: 1000px;
    margin: 0 auto;
}

.project-image-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--transition-smooth);
}

.project-image-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.project-image-card img {
    width: 100%;
    height: 100%;
    aspect-ratio: 3 / 2;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-smooth);
}

.project-image-card:hover img {
    transform: scale(1.02);
}

/* ===================================
   8. OTHER CATEGORIES
   =================================== */
.other-categories {
    max-width: 1200px;
    margin: var(--spacing-xl) auto;
    padding: 0 var(--spacing-md);
}

.other-categories-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.other-category-card {
    background: var(--color-surface);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
    transition: background var(--transition-fast);
}

.other-category-number {
    color: var(--color-text-secondary);
}

.other-category-card:hover { 
    background: #eeeeef; 
}

/* ===================================
   9. CONTACT PAGE & FORM
   =================================== */
.contact-page { 
    padding: 160px 22px 100px; 
}

.contact-page-content { 
    max-width: 700px; 
    margin: 0 auto; 
}

.page-title-alt {
    font-size: var(--font-size-6xl);
    margin-bottom: var(--spacing-sm);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.contact-form input,
.contact-form textarea {
    padding: 18px;
    font-family: var(--font-body);
    font-size: var(--font-size-md);
    background: var(--color-surface);
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.contact-form input:focus,
.contact-form textarea:focus {
    background: white;
    border-color: var(--color-accent);
    outline: none;
    box-shadow: 0 0 0 4px rgba(255, 61, 81, 0.1);
}

.dsgvo-wrapper {
    display: flex;
    gap: 12px;
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    align-items: flex-start;
    margin: var(--spacing-sm);
}

.btn-submit {
    background: var(--color-accent);
    color: white;
    padding: 18px;
    border: none;
    border-radius: 980px;
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-smooth);
}

.btn-submit:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
}

.contact-info-box {
    margin-bottom: var(--spacing-sm);
    background-color: var(--color-surface);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
}

.contact-info-box h3 {
    color: var(--color-text-primary); 
}

/* ===================================
   10. FOOTER
   =================================== */
.footer {
    padding: 60px 22px;
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo { 
    font-weight: 600; 
    margin-bottom: 5px; 
}

.footer-right { 
    display: flex; 
    gap: 24px; 
}

.footer-right a { 
    font-size: var(--font-size-xs); 
    color: var(--color-text-secondary); 
}

/* ===================================
   11. INDEX/STARTPAGE SPECIFIC 
   =================================== */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 var(--spacing-md);
    background-image: 
        linear-gradient(to top, 
            rgba(255, 255, 255, 1) 0%, 
            rgba(255, 255, 255, 0.712) 40%, 
            rgba(255, 255, 255, 0.499) 100%
        ), 
        url('../img/header-background.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: scroll;
}

.hero-title {
    font-size: var(--font-size-7xl);
    font-weight: 600;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto 40px;
}

.btn-primary {
    background: var(--color-accent);
    color: white;
    padding: 16px 36px;
    border-radius: 980px;
    font-weight: 600;
    display: inline-block;
    margin-right: 12px;
    transition: all var(--transition-smooth);
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--color-secondary);
    color: white;
    padding: 16px 36px;
    border-radius: 980px;
    font-weight: 600;
    display: inline-block;
    transition: all var(--transition-smooth);
}

.btn-secondary:hover {
    background: var(--color-primary);
    transform: translateY(-2px);
}

.scroll-indicator {
    position: absolute;
    bottom: 9%;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--color-background-dark), var(--color-border));
}

.services-preview {
    padding: var(--spacing-2xl) var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-title {
    font-size: var(--font-size-6xl);
    font-weight: 600;
    margin-bottom: 10px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.service-card {
    background: var(--color-surface);
    padding: 40px;
    border-radius: var(--radius-lg);
    color: var(--color-text-primary);
    transition: transform var(--transition-smooth);
}

.service-card:hover {
    transform: translateY(-10px);
    background: #ffffff;
    box-shadow: 0 20px 40px rgba(0,0,0,0.05);
}

.service-number {
    font-size: var(--font-size-xs);
    color: var(--color-accent);
    font-weight: 700;
    margin-bottom: 20px;
    display: block;
}

.service-card h3 {
    font-size: var(--font-size-4xl);
    margin-bottom: 15px;
}

.service-arrow {
    color: var(--color-accent);
    font-weight: 600;
    display: block;
    margin-top: 20px;
}

.cta-section {
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
    background: var(--color-surface);
}

.cta-section h2 {
    font-size: var(--font-size-6xl);
    margin-bottom: 20px;
}

.cta-content .btn-secondary {
    margin-top: 30px;
    display: inline-block;
}

/* ===================================
   12. IMAGE + SWIPER SIDE BY SIDE
   =================================== */
.image-swiper-side-by-side {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md) var(--spacing-xl);
}

.single-image-side {
    display: flex;
    align-items: center;
}

.single-image-wrapper {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    width: 100%;
}

.single-image-wrapper img {
    width: 100%;
    height: auto;
    display: block;
}

.swiper-side {
    display: flex;
    align-items: center;
}

.magazineSwiper {
    width: 100%;
    padding: 60px 0 80px;
}

.magazineSwiper .swiper-slide {
    background: var(--color-surface);
    width: 100%;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 15px 50px rgba(0,0,0,0.2);
}

.magazineSwiper .swiper-slide img {
    display: block;
    width: 100%;
    height: auto;
}

.magazineSwiper .swiper-button-next,
.magazineSwiper .swiper-button-prev {
    color: var(--color-accent);
    width: 50px;
    height: 50px;
    background: white;
    border-radius: 50%;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.magazineSwiper .swiper-button-next:after,
.magazineSwiper .swiper-button-prev:after {
    font-size: 20px;
    font-weight: 700;
}

.magazineSwiper .swiper-button-next:hover,
.magazineSwiper .swiper-button-prev:hover {
    background: var(--color-accent);
    color: white;
}

.magazineSwiper .swiper-pagination-bullet {
    width: 12px;
    height: 12px;
    background: var(--color-text-secondary);
    opacity: 0.5;
}

.magazineSwiper .swiper-pagination-bullet-active {
    background: var(--color-accent);
    opacity: 1;
}

/* ===================================
   13. RESPONSIVE – ALLES UNTER 992px
   =================================== */
@media (max-width: 992px) {

    /* --- Navigation --- */
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        display: none;
        flex-direction: column;
        gap: 0;
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0.97);
        backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--color-border);
        padding: var(--spacing-sm) 0;
    }

    .nav-menu.open {
        display: flex;
    }

    .nav-menu > li {
        border-bottom: 1px solid var(--color-surface);
    }

    .nav-menu > li > a {
        padding: 14px var(--spacing-md);
        font-size: var(--font-size-base);
    }

    /* Submenü mobile: immer sichtbar eingerückt */
    .submenu {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        box-shadow: none;
        border: none;
        border-radius: 0;
        padding: 0 0 8px var(--spacing-lg);
        min-width: unset;
        background: transparent;
    }

    .submenu a {
        padding: 8px var(--spacing-md);
        font-size: var(--font-size-sm);
        color: var(--color-text-secondary);
    }

    /* --- Hero --- */
    .hero {
        height: auto;
        min-height: unset;
        padding: 230px var(--spacing-md) 140px;
    }

    .hero-title {
        font-size: var(--font-size-5xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-md);
    }

    .btn-primary,
    .btn-secondary {
        padding: 12px 28px;
        font-size: var(--font-size-sm);
        display: inline-block;
        width: auto;
    }

    .hero .btn-primary {
        margin-right: 10px;
        margin-bottom: 10px;
    }

    .scroll-indicator {
        display: none;
    }

    /* --- Category Header --- */
    .category-header-page {
        padding: 100px 16px 40px;
    }

    .category-title-large {
        font-size: var(--font-size-5xl);
    }

    .category-description {
        font-size: var(--font-size-md);
    }

    /* --- Services (Index) --- */
    .services-preview {
        padding: var(--spacing-xl) var(--spacing-sm);
    }

    .section-title {
        font-size: var(--font-size-4xl);
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .service-card {
        padding: var(--spacing-md);
    }

    .service-card h3 {
        font-size: var(--font-size-3xl);
    }

    /* --- CTA --- */
    .cta-section h2 {
        font-size: var(--font-size-4xl);
    }

    /* --- Grids --- */
    .projects-grid-2x2 {
        grid-template-columns: 1fr;
        padding: 0 var(--spacing-sm) var(--spacing-lg);
    }

    .projects-grid-combined {
        grid-template-columns: 1fr;
        padding: 0 var(--spacing-sm) var(--spacing-lg);
    }

    .project-card-large {
        max-height: none;
    }

    .project-image {
        aspect-ratio: 4 / 3;
        max-height: none;
    }

    .project-cards-stack {
        grid-template-rows: auto;
        grid-template-columns: 1fr;
        height: auto;
        max-height: none;
    }

    .project-card-small {
        height: auto;
    }

    .project-image-small {
        aspect-ratio: 16 / 9;
        height: auto;
    }

    .projects-grid-images-only {
        grid-template-columns: 1fr;
        padding: 0 var(--spacing-sm) var(--spacing-lg);
    }

    /* --- Other Categories --- */
    .other-categories-grid {
        grid-template-columns: 1fr;
    }

    /* --- Contact --- */
    .contact-page {
        padding: 100px 16px 60px;
    }

    .page-title-alt {
        font-size: var(--font-size-4xl);
    }

    .contact-form {
        margin-top: var(--spacing-md);
    }

    /* --- Footer --- */
    .footer {
        padding: 40px 16px;
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

    .footer-right {
        justify-content: center;
    }

    /* --- Swiper / Image Side by Side --- */
    .image-swiper-side-by-side {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        padding: 0 var(--spacing-sm) var(--spacing-lg);
    }

    .magazineSwiper .swiper-button-next,
    .magazineSwiper .swiper-button-prev {
        width: 40px;
        height: 40px;
    }

    .magazineSwiper .swiper-button-next:after,
    .magazineSwiper .swiper-button-prev:after {
        font-size: 16px;
    }
}